參數(shù)資料
型號: ST72F321M
廠商: 意法半導體
英文描述: 80-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU)
中文描述: 80引腳8位微控制器32至60,000閃存/ ROM,ADC的,5個定時器,SPI和SCI的I2C接口(具有比較方案,國際檢察官聯(lián)合會,嵌套中斷,中華語文研習所,人事登記的8位微控制器)
文件頁數(shù): 162/178頁
文件大?。?/td> 3121K
代理商: ST72F321M
ST72F321M, ST72321BM
162/178
COMMUNICATION INTERFACE CHARACTERISTICS (Cont’d)
The following table gives the values to be written in
the I2CCCR register to obtain the required I
2
C
SCL line frequency.
Table 25. SCL Frequency Table
Legend:
R
P
= External pull-up resistance
f
SCL
= I
2
C speed
NA = Not achievable
Note:
– For speeds around 200 kHz, achieved speed can have
±
5% tolerance
– For other speed ranges, achieved speed can have
±
2% tolerance
The above variations depend on the accuracy of the external components used.
f
SCL
(kHz)
I2CCCR Value
f
CPU
=4 MHz.
f
CPU
=8 MHz.
V
DD
= 4.1 V
R
P
=3.3k
NA
NA
83h
10h
24h
5Fh
V
DD
= 5 V
V
DD
= 4.1 V
R
P
=3.3k
83h
85h
8Ah
24h
4Ch
FFh
V
DD
= 5 V
R
P
=4.7k
NA
NA
83h
10h
24h
5Fh
R
P
=3.3k
NA
NA
83h
10h
24h
5Fh
R
P
=4.7k
NA
NA
83h
10h
24h
5Fh
R
P
=4.7k
83
85h
89h
23h
4Ch
FFh
R
P
=3.3k
83h
85h
8Ah
24h
4Ch
FFh
R
P
=4.7k
83h
85h
8Ah
23h
4Ch
FFh
400
300
200
100
50
20
相關PDF資料
PDF描述
ST72321BM 80-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU)
ST72F321 64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE
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ST72F321AR6T6 64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE
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